PL124695B1 - Multilayer weldable film - Google Patents

Multilayer weldable film Download PDF

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Publication number
PL124695B1
PL124695B1 PL1980227335A PL22733580A PL124695B1 PL 124695 B1 PL124695 B1 PL 124695B1 PL 1980227335 A PL1980227335 A PL 1980227335A PL 22733580 A PL22733580 A PL 22733580A PL 124695 B1 PL124695 B1 PL 124695B1
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Poland
Prior art keywords
weight
film
component
weldable
ethylene
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PL1980227335A
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Polish (pl)
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PL227335A1 (en
Original Assignee
Wolff Walsrode Ag
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Publication of PL227335A1 publication Critical patent/PL227335A1/xx
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/32Layered products comprising a layer of synthetic resin comprising polyolefins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/18Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J123/04Homopolymers or copolymers of ethene
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J123/10Homopolymers or copolymers of propene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/30Properties of the layers or laminate having particular thermal properties
    • B32B2307/31Heat sealable
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/50Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514Oriented
    • B32B2307/516Oriented mono-axially
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/50Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514Oriented
    • B32B2307/518Oriented bi-axially
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00Polyalkenes
    • B32B2323/04Polyethylene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00Polyalkenes
    • B32B2323/10Polypropylene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2553/00Packaging equipment or accessories not otherwise provided for
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2666/00Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
    • C08L2666/02Organic macromolecular compounds, natural resins, waxes or and bituminous materials
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2666/00Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
    • C08L2666/28Non-macromolecular organic substances
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/28Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2813Heat or solvent activated or sealable
    • Y10T428/2817Heat sealable
    • Y10T428/2826Synthetic resin or polymer
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/28Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2848Three or more layers
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31652Of asbestos
    • Y10T428/31663As siloxane, silicone or silane
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31652Of asbestos
    • Y10T428/31667Next to addition polymer from unsaturated monomers, or aldehyde or ketone condensation product
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31725Of polyamide
    • Y10T428/31739Nylon type
    • Y10T428/31743Next to addition polymer from unsaturated monomer[s]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31855Of addition polymer from unsaturated monomers
    • Y10T428/31909Next to second addition polymer from unsaturated monomers
    • Y10T428/31913Monoolefin polymer
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31855Of addition polymer from unsaturated monomers
    • Y10T428/31909Next to second addition polymer from unsaturated monomers
    • Y10T428/31928Ester, halide or nitrile of addition polymer
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31855Of addition polymer from unsaturated monomers
    • Y10T428/31938Polymer of monoethylenically unsaturated hydrocarbon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Stringed Musical Instruments (AREA)
  • Artificial Filaments (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

A sealable multilayer film for packaging comprising a polypropylene film and at least one sealing layer of an ethylene homo- or copolymer wherein the sealing layer contains an additive combination of a long-chain amine, a thermoplastic polymer incompatible with the sealing polymer and a polydialkyl siloxane.

Description

Przedmiotem wynalazku jest spawalna, wielo¬ warstwowa folia poliolefinowa, zorientowana przez rozciaganie, przydatna szczególnie jako folia opa¬ kowaniowa, zwlaszcza do wytwarzania obwolut pu¬ delek papierosów. iStosowanie homopolimerów lub kopolimerów ety¬ lenu do wytwarzania spaw,alnych i orientowanych przez rozciaganie folii opakowaniowych jest znane od dawna, ale wielokrotnie próbowano ulepszyc wlasciwosci italkiich wiMowaiisitwowyiCih Mii.Z opisu patentowego RFN nr 1161679 znany jest sposób wytwarzania wielowarstwowej folii z ho- mopolimeru etylenu o dobrej wytrzymalosci spa¬ wów i dobrej przyczepnosci miedzy warstwami.W opisie patentowym RFN nr li504 36|2 omówio¬ no sposób polepszania zdolnosci do spawania na goraco zorientowanej przez rozciaganie termoplas¬ tycznej blony z polipropylenu i z powloka polie¬ tylenowa, przy którego stosowaniu strefa zamknie- aia opakowania nie kurczy sie znacznie podczas spawania i fym samym nie wplywa niekorzystnie na wyglad i wytrzymalosc spawu.Z opisu patentowego RFN nr 1504)626: znane sa wielowarstwowe folie majace srodkowa warstwe polipropylenowa oraz polietylenowe warstwy ze¬ wnetrzne.Wszystkie te znane folie wielowarstwowe trudno jest jednak stosowac w szybkobieznych maszynach do pakowania, zwlaszcza w szybkobieznych maszy¬ nach do pakowania papierosów w pudelka z olb- 10 15 20 30 woluta. W szczególnosci, przy duzej szybkosci pa¬ kowania wystepuja bledy przy wytwarzaniu spa¬ wów zamykajacych i owijaniu obwoluta, co po¬ woduje przerwy w pracy oraz tworzenie sie osa¬ dów na czesciach maszyn na skutek tarcia.W celu zwiekszenia zdolnosci poslizgowej w zna¬ nych foliach stosuje sie szeroko amidy kwasów tluszczowych, ale jednak nie daje to zadowalaja¬ cych wyników w przypadku maszyn szybkobiez¬ nych. Równiez znany z opisu patentowego RFN nr 2 22i5 703 dodatek odmiennej zywicy termoplas¬ tycznej nie przynosi zadanego skutku.Wynalazek ma przeto na celu umozliwienie wy¬ twarzania wielowarstwowej folii o bardzo dobrej zdolnosci poslizgowej i przesuwajacej sie bardzo dobrze w maszynach, nadajacej sie zwlaszcza na obwoluty pudelek papierosowych. Cel ten osiaga sie zgodnie z wynalazkiem wytwarzajac spawalna folie wielowarstwowa, orientowana co najmniej jednoosiowo przez rozciaganie, skladajaca sie z co najmniej jednej folii polipropylenowej i co naj¬ mniej jednej spalanej folii z polietylenu lub z ko¬ polimeru etylenu zawierajacego co najmniej 4% wagowe etylenu. Cecha folii wedlug wynalazku jest to, ze jej warstwa dajaca sie spawac zawiera do¬ datek skladajacy sie z (1) dlugolancuchowej aminy alifatycznej w ilosci 0,3—1,0%, korzystnie 0,4— 0,7% wagowych w stosunku do warstwy dajacej sie spawac, (2) zdyspergowaneg© polimeru termo¬ plastycznego nie mieszajacego sie z polietylenem 124 695124 695 3 lufo z kopolimerem etylenu, majacego temperature mieknienia najwyzej o 50°C nizsza lufo wyzsza ad temperatury mieknienia polietylenu lufo kopolimeru etylenu, w ilosci 04—0,W», korzystnie 0,ll!—0,50*/o wagowych w stosunku do warstwy dajacej sie spa¬ wac i (3) polidwualkilosiloksanu w ilosci 0,2— 0,8tyo, korzystnie 0,3—0,61% wagowych w stosunku do warstwy dajacej siie spawac.Jako polipropylen w folii rdzeniowej korzystnie stosuje sie izotaktyczny polipropylen o gestosci 0,90—fl),&i g/ml i o wskazniku plyniecia 1—4 g/10 jiainjit w temperaturze 20O°C i pod cisnieniem 212 I tfa; / Jako* lidlini^r - w) warstwie spawanej stosuje sie / monopolimer lub kopolimer etylenu, korzystnie po- I ldetyl€n,f wysokiej gestosci albo statystyczny kopo- -4inQer etylenu -£ /propylenem, zawierajacy co naj- mniej^^^/ir^iiaiigpwe, korzystnie zawierajacy 95p/o wagowych propylenu i 511/* wagowych etylenu. Ges¬ tosc polimeru w warstwie spawanej powinna wy¬ nosic korzystnie 0,896!—0,960 g/ml, jego wskaznik plyniecia powinien wynosic 1—7 g/10 minut w tem¬ peraturze 190°C i pod cisnieniem 212 kPa, a tempe¬ ratura topnienia krystalitu powinna w zaleznosci od jego rodzaju wynosic 1i2i5—148°C (pod mikro¬ skopem polaryzacyjnym).Jako pierwszy z podanych wyzej skladndk6w do¬ datku stosuje sie dlugolancuchowe, alifatyczne, trze¬ ciorzedowe aminy, ewentualnie o jednym wiazaniu podwójnym, korzystnie aminy trzeciorzedowe, któ¬ rych grupa alifatyczna stanowi lancuch o 12^18 atomach wegla i jest podstawiona jedna lufo dwie¬ ma grupami hydroksyalkilowymi o^l—4 atomach wegla. Szczególnie korzystnie stosuje sie N,N-dwu/ /2-hydroksyetylo/-alkiloaminy o 10—16 atomach wegla w rodniku alkilowym. lersnoplastyczny polimer nie mieszajacy sie z polimerem dajacym sie spawac powinien miec tem¬ perature mieknienia najwyzej o 50°C nizsza lufo wyzsza od temperatury mieknienia polimeru daja¬ cego sie spawac i powinien byc w nim zdyspergio- wany, tworzac czastki korzystnie ó wielkosci 0,01— 4 ym, zwlaszcza 0,lt—i2 m. Nie mieszajacy sie po- Mmer dysperguje sie w masie spawalnej zwyklymi, znanymi sposobami.Korzystnie nadaja sie do tego celu termoplas¬ tyczne zywice, takie jak kopolimery etylenu z kwasem metakrylowym (90—&9°C), polilaurymolak- tamid (lflOPC), kopolimery akrylonitrylu z butadie¬ nem i metakrylanem (80°C), i kopolimery etylenu z alkoholem winylowym 0185°C). Szczególnie ko¬ rzystnie stosuje sie kopolimery etylenu z kwasem metakrylowym, które ewentualnie w calosci lufo czesciowo moga wystepowac w postaci soli z me¬ talami alakalicznymi lufo korzystnie z cynkiem, albo tez polilaurynolaktam.Jako trzeci skladmik dodatku stosuje sie poli- (dwualktiilasli^^ o ikoinzystnie 1—3 aitoimaioh weg¬ la w rodniku alkilowym. Powinien on miec korzyst¬ nie lepkosc wynoszaca co najmniej 1 milion mm2/S w temperaturze 20°C. Szczególnie odpowiedni jest polidwumetylosilolksan.Stosujac kombinowany dodatek wedlug wynalaz¬ ku mozna wytwarzac wielowarstwowe folie dajace sie nie tylko bardzo dobrze przesuwac w maszy¬ nach i majace bardzo dobra zdolnosc poslizgu, ale równiez mozna uniknac koniecznosci stosowanej zwykle wstepnej obróbki elektrycznej folii, która to obróbka pogarsza jak wiadomo wspólczynnik tarcia 5 slizgowego folii. Unika sie takze sladów scierania lufo nieprzezroczystasci folii, które to zjawliska wy¬ stepuja przy stosowaniu znanych przekladek na podstawie nieorganicznych proszków. Nieoczekiwa¬ nie, stosowanie dodatku wedlug wynalazku nie wy- io wdera tez zadnego niekorzystnego wplywu na zdol¬ nosc folii do sklejania, np. z paskiem do rozrywa¬ nia obwoluty, czego mozna bylo sie spodziewac przy uzyciu polialkilosiloksanów.Nie mozna bylo przeto oczekiwac, ze stosujac 15 kombinowany dodatek" wedlug wynalazku uzyska sie zadana poprawe wlasciwosci znanych folii wie¬ lowarstwowych,, tym bardziej, ze stosowanie zna¬ nych srodk6w zwiekszajacych poslizg, takich jak np. nasycone lub nienasycone amidy kwasów tlusz- 20 czowych oraz wielkoczasteczkowe, podstawione amidy kwasów tluszczowych o temperaturze top¬ nienia 70—U30°C, np. amidy kwasu erukowego, amid kwasu olejowego, alkilo^Iwu/amidy kwasów tluszczowych/ N^N^polietoksylowane amidy kwasów 25 tluszczowych nie zapewnia dostatecznego poslizgu w szybkobieznych maszynach do pakowania.Przedmiotem wynalazku jest przeto takze sto¬ sowanie wielowarstwowych folii wedlug wynalazku, zwlaszcza wielowarstwowej folii majacej jedna s Q0 warstwe z polipropylenu i 2 warstwy dajace sie spawac, jako folii do opakowywanua, zwlaszcza jako obwoluta pudelek papierosów.Wytwarzanie i przeróbke masy do wyboru wars¬ twy cfcauacej sie spawac, to jest dolzowaniiie i wra- 35 biariie dodatku do polimeru stanowiacego te wars¬ twe i nastepnie laczenie tej masy z rdzeniowa folia polipropylenowa, mozna prowadzic zwyklymi spo¬ sobami, takimi jak laminowanie lufo wytlaczanie stopu. Korzystnie jest dodawac ten dodatek bez- 40 posrednio, unikajac klopotliwego stosowania me¬ tody, wedlug której wytwarza sie macierzysta par¬ tie z dodatkiem. Korzystnie jest równiez nanosic te mase z dodatkiem na folie rdzeniowa w zabiegu oddzielnym od wytlaczania blony polipropyleno- « wej, mianowicie w dalszym etapie procesu orien¬ towania przez rozciaganie. Folie rdzeniowa ko¬ rzystnie jest orientowac przez rozciaganie dwuosio¬ wo, a Mie dajaca sie spawac — co najmniej jed- noosiowo. Rozciaganie dwuosiowe prowadzi sie W zwyklymi metodami orientowania przez rozciaganie.W wielowarstwowej folii wedlug wynalazku gru¬ bosc rdzeniowej Doili polipropylenowej powinna wy¬ nosic korzystnie 10—5(0 yun, a warstwy dajacej sie spawac 0,8—2 [im, korzystnie 1 |tm. 55 Wielowarstwowe folie wedlug wynalazku mozna tez zaopatrywac w nadruki i w paski do rozry¬ wania.Metody badania.Przefoieg procesu pakowania jest oceniony przez w personel obslugujacy maszyny na podstawie przy¬ jetych kryteriów, takich jak posuw, obwijanie i brak zatarc. Jezeli przy pakowaniu z duza pred¬ koscia nie wystepuja zaburzenia okreslane tymi kryteriami, wówczas dana folia odpowiada wy- •5 maganiom, przy czym nawet sporadyczne zaklóce-124 695 6 nia oznaczaja, ze folia jest nieprzydatna. Automaty do pakowania powinny byc przed rozpoczeciem prób dobrze wyregulowane, aby nie powodowaly zaklócen.Wytrzymalosc spawu bada sie recznie. Jest ona dostateczna wtedy, gdy przy scinajacym obciazeniu spawu do jego rozerwania potrzebna jest znaczna sila. Wytrzymalosc ta jest takze dobra wtedy, gdy przy takim samym obciazeniu folia opakowaniowa ulega rozerwaniu poza spawem.Przezroczystosc ocenia sie wzrokowo po wykona¬ niu gotowych opakowan. Jest ona zadowalajaca, gdy drukowany obraz mozna rozpoznac wyraznie, bez zmetnienia. Utrata przezroczystosci jest szcze¬ gólnie wyrazna w przypadku drukowanych obra¬ zów o ciemnej barwie, Próbe popiolowa prowadzi sie po pewnym nala¬ dowaniu folii, mianowicie przez trzykrotne potarcie jej welnianym suknem w jednym kierunku. Próba popiolowa daje wymik ujemny, gdy tak naladowana folia przyciaga popiól z papierosa z odleglosci okolo 3 cm.Przyklad I. Do 98,7% wagowych polietylenu o gestosci 0,9154 g/ml, majacego wskaznik plynnos¬ ci 3 g/10 minut temperaturze 190°C i pod cisnie- niiem 2il2 kPa oraz o temperaturze topnienia krys¬ talitu 128—(li33°C w temperaturze masy okolo 22lo°C wprowadza sie przez mieszanie i wytlaczanie 0j,5!°/o wagowych N,N^dwu/2-hydroksyetylo/-aminy1, 0^51% wagowych kopolimeru etylenu z kwasem metakry¬ lowym, w którym czesc grup karboksylowych jest w postaci soli z cynkiem, a którego gestosc wynosi 0,936 g/ml, wskaznik plyniecia 5 g/10 minut w tem¬ peraturze 1<90°C pod cisnieniem 96 kPa, a tempe¬ ratura topnienia 99°C oraz 0,3% wagowych póli- dwumetylosiloksanu o gestosci 0,965: g/ml w tem¬ peraturze 20°C i o lepkosci 1 milion mm2/s w temperaturze 2Q°C. 10 15 20 25 30 Otrzymana mase nanosi sie w znany sposób na obie strony polipropylenowej folii rdzeniowej i ra¬ zem z nia rozciaga. Folia rdzeniowa sklada sie z polipropylenu w gestosci 0,905 g/ml, wskazniku ply¬ niecia 2 g/10 minut w temperaturze 230°C i pod cisnieniem 212 kPa oraz o temperaturze mieknienia 1)60—166°C. Otrzymana wielowarstwowa folia skla¬ da sie z warstwy spawalnej o grubosci 1 [jun, folii rdzeniowej o grubosci 19 |jtm i drugiej warstwy spawalnej o grubosci 1 ^im.Przesuwanie odcinków folii w szybkobieznej ma¬ szynie do wytwarzania obwoluty na pudelkach w ilosci 265 sztuk/minute odbywa sie bez zaklócen.W temperaturze 136—li43°C wytwarza sie trwale spawy i obwoluta nie ma zadnych wad. Przez prze¬ stawianie regulatora zalamania w maszynie uzys¬ kuje sie dobre zalamanie folii. Maszyna pracuje w ciagu wielu godzin bez zaklócen i zjawisko za¬ wierania na narzedziach spawajacych, blachach formujacych i walcach prowadniczych nie wyste¬ puje. Obwoluta jest przezroczysta, to znaczy, ze obraz pod obwoluta jest wyraznie widoczny. Dzia¬ lanie antyelektrostatyczne jest wskazane w pr&bde popiolowej. Wyniki podano w tablicy.Przyklad la (przyklad prównawczy). Mase do wytwarzania warstwy dajacej sie spawac przygo¬ towuje sie jak w przykladzie I i warstwy naklada sie równiez jak w przykladzie I, ale wytworzona folie wielowarstwowa poddaje sie obróbce elekt¬ rycznej za pomoca wyladowania koronowego tak, ze antyelektrostatyczne dzialania mozna stwierdzic wyraznie nie tylko w próbie popiolowej, ale rów¬ niez metoda pomiaru wedlug Shishido (okres pól- trwania wyladowania). Tak potraktowana folia nie daje sie stosowac bez zaklócen w maszynie do pa¬ kowania, poniewaz poslizg folii jest gorszy. To samo dotyczy obwoluty opakowania. Swiadczy to Tablica Warstwa dajaca sie spawac Polietylen Kopottlimer etylen/pnopylen 4% etylenu Dodatek Amina alifatyczna Kopolimer etylem/kwas metakrylowy PoMaurynoilalktam PolidwualMlosiloksan Przebieg procesu opakowania Posuw Wytrzymalosc spawu Jakosc obwoluty Praca maszyny Przezroczystosc Antyelektrostatycznosc Numer przykladu 1 I 98,7% 0,5% 0,5% 0,3% bardzo dobry bardzo dobra bardzo dobra bardzo dobra bardzo dobra dostateczna^ II | III | la 98,5% 0,5% 0,5% 0,5% bardzo dobry bardzo dobra bardzo dobra bardzo dobra bardzo dobra dostateczna 99% 0,5% 0,2% bardzo dobry bardzo dobra bardzo dobra bardzo dobra bardzo dobra dostateczna 98,7% 0,5%* 0,5% \ 0,3% zaklócenia bardzo dobra niezadowalajaca zaklócenia bardzo dobra dobra124 695 8 o tym, ze lepsze wlasciwosci antyelektrostatyczne nie daja tego zadanego wyniku.Przyklad II. Do wytwarzania warstwy da¬ jacej sie spawac stosuje sie mieszanine zawierajaca 98/5% wagowych kopolimeru etylenu z propyle¬ nem, o zawartosci 4,51% wagowych etylenu, majaca gestosc 0,901 g/ml, wskaznik plyniecia 2 g/10 mi¬ nut w temperaturze 190°C i pod cisnieniem 212 kPa i o temperaturze miekriienia 142—1480iC, 0,5p/o wagowych aminy stosowanej w przykladzie I, 0,5i% wagowych termoplastycznego polimeru stosowane¬ go w przykladzie I i 0,5°/o wagowych polidwume- tylosilofcsanu stosowanego w przykladzie I. Mase te naklada sie w zwykly spos6b na polipropylenowa folie rdzeniowa i razem z nia rozciaga. Otrzymuje sie wielowarstwowa folie, której grubosc i budowa sa takie jak folii opisanej w przykladzie I. Folie te stosuje sie w szybkobieznych maszynach do pa¬ kowania, dajacych 2i66 opalkowan/mtiinJuite, przy ozyim zachowuje sie ona dobrze, jak to uwidoczniaja wy¬ niki podane w tablicy.Przyklad III. Do wytwarzania warstwy daja¬ cej sie spawac stosuje sie mase zawierajaca 99,OP/o wagowych kopolimeru etylenowego opisanego w przykladzie I, 0,5P/a wagowych amdny stosowanej w prizylkladizlie 1, ft,2°/o wagowe pcMaiuErymAaMamu o temperaturze topnienia 176—160°C i 0,3% wa¬ gowych polidwumetylosiloksami opisanego w przyk¬ ladzie I. Mase te naklada sie tak jak w poprzed¬ nich przykladach na polipropylenowa folie rdze¬ niowa i razem z nia rozciaga, otrzymujac wielo¬ warstwowa folie o grubosci takiej jak folii w przykladzie I. Folie te stosuje sie z bardzo dob¬ rym wynikiem w maszynach do pakowania daja¬ cych 2615 opakowan/minute. Temperatura spawania wynosi 146°C. Wyniki prób podano w tablicy. Za¬ wartosc poszczególnych skladników podano w pro¬ centach wagowych, a symbol X oznacza, ze folie poddano wstepnej obróbce elektrycznej.Zastrzezenia patentowe y 1. Wielowarstwowa folia dajaca sie spawac, skla¬ dajaca sie z co najmniej jednej folii polipropy¬ lenowej i co najmniej jednej, dajacej sie spa¬ wac folii z polietylenu albo z kopolimeru etylenu zawierajacego co najmniej 4% wagowe etylenu, znamienna tym, ze warstwa folii dajaca sie spa- 5 wac zawiera dodatek skladajacy sie z (1) dlugo- lancuchowej aminy alifatycznej w ilosci 0,3—lD/o wagowych w stosunku do warstwy dajacej sie spa¬ wac, (2) zdyspergowanego polimeru termoplastycz¬ nego nie mieszajacego sie z polietylenem lub z io kopolimerem etylenu, majacego temperature miek- nienia najwyzej o 50°C nizsza lub wyzsza od tem¬ peratury miekriienia polietylenu lub kopolimeru etylenu, w ilosci 0,1—0,71% wagowych w stosunku do warstwy dajacej sie spawac i (3) polidwual- 15 ikilosiloksanu w ilosci O,2h^0,8°/o wagowych w sto¬ sunku do warstwy dajacej sie spawac. 2. Folia wedlug zastrz. 1, znamienna tym, ze za¬ wiera dodatek zawierajacy 0,4—0,7°/o wagowych skladnika (1), 0,l(&-^0,5i°/o wagowych skladnika (2) i 20 o,3—09i6% wagowych skladnika (3). 3. Folia wedlug zastrz. 1, znamienna tym, ze jako skladnik (1) zawiera N,N-dwui/hydroksyalklilo/-alki- loamine o 12^16 atomach wegla w grupie alkilo- aminowej. 4. Folia wedlug zastrz. 1, znamienna tym, ze jako skladnik (1) zawiera N,N-dwaii/!2-hydrokfeyetyio/-al- kiloamine o 12-^16 atomach wegla w grupie alki- loarriinowej. 5. Folia wedlug zastrz. 1, znamienna tym, ze jako skladnik (2) zawiera kopolimer etylenu z kwasem metakrylowym, akrylonitrylu z butadienem i meta- krylanem lub etylenu z alkoholem winylowym, albo poliilaurynollalktaim. 6. Folia wedlug zastrz. 1, znamienna tym, ze jako 35 skladnik (3) zawiera polidwualkUosiioksan o lepkos¬ ci wynoszacej co najmniej 1 milion mm2/s w tem¬ peraturze 20°C. 7. Folia wedlug zastrz. 1, znamienna tym, ze jako skladnik (3) zawiera polMwuimetylosiloksan. 40 3. Folia wedlug zastrz. 1, znamienna tym, ze za¬ wiera folie rdzeniowa orientowana przez rozciaga- ^ nie dwuosiowo a warstwe dajaca sie spawac orien¬ towana przez rozciaganie co najmniej jednoosiowo. 25 30 Drukarnia Narodowa, Zaklad Nr 6, 458/84 Cena 100 z! PL PL PL PL The present invention relates to a weldable, stretch-oriented multilayer polyolefin film, which is particularly useful as wrapping film, particularly for producing cigarette pack wraps. The use of ethylene homopolymers or copolymers for the production of welded, stretch-oriented and stretch-oriented packaging films has been known for a long time, but many attempts have been made to improve the properties of the Italian wording. Good weld strength and good adhesion between layers. German Patent No. 1504 36-2 describes a method of improving the hot-weldability of a oriented by stretching a thermoplastic polypropylene film and a polyethylene coating, when used the zone will close the zone. - the packaging aia does not shrink significantly during welding and thus does not adversely affect the appearance and strength of the weld. however, it is difficult to apply c in high-speed packaging machines, particularly high-speed machines for packing cigarettes into giant volute boxes. In particular, at high packing speeds, errors occur in the manufacture of the capping welds and wrapping the dust jacket, which result in interruptions in operation and the formation of friction deposits on machine parts. Fatty acid amides are widely used in films, but this does not give satisfactory results in the case of high-speed machines. The addition of a different thermoplastic resin, known from German Patent Specification No. 2,222 and 703, also does not bring the desired effect. cigarette boxes. This object is achieved according to the invention by producing a weldable multilayer film, at least uniaxially stretched, consisting of at least one polypropylene film and at least one burned polyethylene film or an ethylene copolymer containing at least 4% by weight of ethylene. . A feature of the film according to the invention is that its weldable layer contains an additive of (1) a long-chain aliphatic amine in an amount of 0.3-1.0%, preferably 0.4-0.7% by weight, based on a weldable layer, (2) a dispersed thermoplastic polymer not miscible with polyethylene 124 695 124 695 3 lufo with ethylene copolymer, having a softening point of at most 50 ° C lower or higher than the softening temperature of polyethylene or ethylene copolymer, in the amount of O 4 - 0.1%, preferably 0.1% - 0.50% by weight based on the weldable layer and (3) polydualkylsiloxane in an amount of 0.2-0.8%, preferably 0.3-0. 61% by weight, based on the weldable layer. As polypropylene in the core film, isotactic polypropylene with a density of 0.90 µg / ml and a flow index of 1-4 g / 10 jiainjit at 20 ° C and under a pressure of 212 I tfa; / The * lidlini ^ r - w) of the welded layer is / ethylene monopolymer or copolymer, preferably high density poly Idetyl, f or a random ethylene copolymer - or propylene containing at least ^^^ (i.a. iiaiigpwe), preferably containing 95% by weight of propylene and 511% by weight of ethylene. The density of the polymer in the weld layer should preferably be 0.896-0.960 g / ml, its flow index should be 1-7 g / 10 minutes at 190 ° C and a pressure of 212 kPa, and its melting point The crystallite, depending on its type, should be between 12 and 145 ° -148 ° C (under the polarizing microscope). The first of the above-mentioned additive components are long-chain, aliphatic, tertiary amines, optionally with one double bond, preferably tertiary amines, the aliphatic group of which is a chain of 12 to 18 carbon atoms and is substituted with one or two or two has hydroxyalkyl groups of 1-4 carbon atoms. N, N-di (2-hydroxyethyl) alkylamines having 10 to 16 carbon atoms in the alkyl radical are particularly preferably used. The lersnoplastic polymer which is not miscible with the weldable polymer should have a softening point of at most 50 ° C lower than or higher than the softening point of the weldable polymer and should be dispersed therein, preferably forming particles with a size of 0.01 4 [mu] m, in particular 0.1 to 2 m. The immiscible polymer is dispersed in the weldable mass by conventional, known methods. Thermoplastic resins such as ethylene methacrylic acid copolymers (90-9 ° C.), poly laurimolacamide (IFOPC), copolymers of acrylonitrile with butadiene and methacrylate (80 ° C.), and copolymers of ethylene with vinyl alcohol (0-185 ° C.). Particular preference is given to using ethylene methacrylic acid copolymers, which, if appropriate, may be wholly or partially present in the form of a salt with alkaline metals, preferably with zinc, or also with polylaurin lactam. and, in fact, 1 to 3 alcoholic carbon in the alkyl radical. It should preferably have a viscosity of at least 1 million mm 2 / S at 20 ° C. Polydimethyl silolxane is particularly suitable. not only slide very well in machines and having a very good sliding ability, but also the need for the usual electrical pre-treatment of the film, which is known to deteriorate, as is known, the coefficient of friction of the film 5, is avoided. which phenomena occur with the use of known seat spacers a lot of inorganic powders. Unexpectedly, the use of the additive according to the invention does not cause any adverse effect on the ability of the film to stick, for example with a strip to break the wrapper, which could be expected when using polyalysiloxanes. that by using the combined additive "according to the invention, the desired improvement in the properties of the known multilayer films will be achieved, all the more so since the use of known sliding agents, such as, for example, saturated or unsaturated fatty acid amides and high molecular weight, substituted amides. fatty acids with a melting point of 70 ° -60 ° C, eg erucic acid amides, oleic acid amide, alkyl, fatty acid amides, polyethoxylated fatty acid amides, do not provide sufficient slip in high-speed packaging machines. The subject of the invention is therefore also the use of multilayer films according to the invention, in particular a multilayer film having one s Q There is a polypropylene layer and 2 layers that can be welded as wrapping foil, especially as a cigarette case. easy and subsequent bonding of this mass to the core polypropylene film can be carried out by conventional methods such as lamination or melt extrusion. It is preferable to add this additive directly, avoiding the cumbersome application of the method of producing the mother fraction with the additive. It is also advantageous to apply this mass with the additive to the core foil in a separate operation from the extrusion of the polypropylene sheet, namely at a later stage in the stretching orientation process. The core film is preferably stretched bi-axially and the weldable copper at least unaxially. Biaxial stretching is carried out by conventional stretching methods. In the multilayer film according to the invention, the core thickness of the polypropylene core should preferably be 10-5 (0 µm, and the weldable layer 0.8-2 µm, preferably 1 µm). tm. 55 The multilayer films according to the invention can also be provided with prints and tear strips. Test methods. The progress of the packaging process is assessed by the machine operating personnel on the basis of criteria adopted, such as feed, wrapping and no seizure. In high-speed packaging, there are no disturbances determined by these criteria, then a given film meets the requirements, and even occasional disturbances mean that the film is unsuitable. Packaging machines should be well adjusted before starting the tests, The strength of a weld is tested manually, it is sufficient when, with a shear load, the weld breaks p considerable strength is required. This strength is also good when the packaging film tears apart from the seam under the same load. The transparency is assessed visually after the finished packaging has been manufactured. It is satisfactory when the printed image can be recognized clearly without blurring. The loss of transparency is particularly pronounced in the case of dark-colored printed images. The ash test is carried out after a certain loading of the film, namely by rubbing it three times with a woolen cloth in one direction. The ash test gives a negative reaction when the foil charged in this way attracts cigarette ash from a distance of about 3 cm. 190 ° C and under a pressure of 212 kPa and a melting point of crystallite of 128 - (li33 ° C. at a mass temperature of about 22 ° C. 2-hydroxyethyl amine1.0-51% by weight of an ethylene-methacrylic acid copolymer, in which some of the carboxyl groups are in the form of a salt with zinc, and the density of which is 0.936 g / ml, the flow rate is 5 g / 10 minutes at the same time. Temperature 1 <90 ° C under a pressure of 96 kPa, a melting point of 99 ° C and 0.3% by weight of semi-dimethylsiloxane with a density of 0.965: g / ml at 20 ° C and a viscosity of 1 million mm 2 / s in temperature 2 ° C. 10 15 20 25 30 The mass obtained is applied in a known manner to both sides of the core polypropylene film and stretched together with it. the core consists of polypropylene with a density of 0.905 g / ml, a flow index of 2 g / 10 minutes at a temperature of 230 ° C and a pressure of 212 kPa and a softening point of 1) 60-166 ° C. The obtained multilayer film consists of a weldable layer 1 µm thick, a core film 19 µm thick and a second weldable layer 1 µm thick. / minute is performed without interruption. At a temperature of 136–L43 ° C, welds are produced permanently and the dust jacket has no defects. Good film break is obtained by adjusting the deflection regulator on the machine. The machine runs for many hours without disturbance and no clogging occurs on the welding tools, forming plates and guide rolls. The dust jacket is transparent, i.e. the image underneath the dust jacket is clearly visible. Antistatic action is indicated in the ash test. The results are given in the table, Example Ia (comparative example). The material for the production of the weldable layer is prepared as in Example I and the layers are also applied as in Example I, but the produced multilayer film is electro-treated with a corona discharge so that the antistatic effects can be clearly noticed not only in ash test, but also the measurement method according to Shishido (duration of the discharge). The film treated in this way cannot be used without disturbance in a packing machine, since the slide of the film is inferior. The same applies to the packaging dust jacket. This is evidenced by the table Weldable layer Polyethylene Ethylene / pnopylene copolymer 4% ethylene Additive Aliphatic amine Ethyl / methacrylic acid copolymer PoMaurynoilalktam PolydualMosiloxane The course of the packaging process Feed Welding strength Quality of the jacket Work of the machine Opacity 1 Transparency 0 98.7% Opacity 1 Transparency , 5% 0.3% very good very good very good very good very good satisfactory ^ II | III | la 98.5% 0.5% 0.5% 0.5% very good very good very good very good very good sufficient 99% 0.5% 0.2% very good very good very good very good very good sufficient 98 , 7% 0.5% * 0.5% \ 0.3% noise very good unsatisfactory noise very good good 124 695 8 about the fact that better antistatic properties do not give this result. Example II. For the production of the weldable layer, a mixture containing 98/5% by weight of ethylene propylene copolymer, 4.51% by weight of ethylene, a density of 0.901 g / ml, a flow rate of 2 g / 10 minutes per minute is used. temperature of 190 ° C and a pressure of 212 kPa and a measuring temperature of 142-1480 ° C, 0.5% by weight of the amine used in Example 1, 0.5% by weight of the thermoplastic polymer used in Example 1, and 0.5% by weight of polydume - tylosilofcsan used in example I. This mass is applied in the usual way to the polypropylene core foil and stretched together with it. A multilayer film is obtained, the thickness and structure of which are the same as those described in Example 1. These films are used in high-speed wrapping machines, producing 2 and 66 wrapping / mtiin juite, and in winter it behaves well, as is evidenced by the results given above. in the table Example III. For the production of the weldable layer, a mass containing 99.0% by weight of the ethylene copolymer described in Example 1, 0.5% by weight of the amdne used in the prizylkladizlie 1.00.2% by weight of pcMaiuErymAaMam with a melting point of 176.0% by weight is used. 160 ° C and 0.3% by weight of the polydimethylsiloxes described in Example I. These masses are applied, as in the previous examples, to the polypropylene core foil and stretched therewith to obtain a multilayer foil of such thickness. like the films in Example 1. These films have been used with very good results in packaging machines of 2615 packages / minute. The welding temperature is 146 ° C. The test results are given in the table. The individual components are given in percent by weight and the symbol X indicates that the films have been electrically pretreated. one weldable film of polyethylene or of an ethylene copolymer containing at least 4% by weight of ethylene, characterized in that the weldable film layer comprises an additive consisting of (1) a long-chain aliphatic amine in an amount of 0 3 to 10% by weight based on the weldable layer, (2) a dispersed thermoplastic polymer not miscible with polyethylene or with an ethylene copolymer, having a softening point of at most 50 ° C lower or higher than the agitation temperature of polyethylene or ethylene copolymer in the amount of 0.1-0.71% by weight in relation to the weldable layer and (3) polydual-siloxane in the amount of 0.2 h ^ 0.8% by weight per hundred ¬ relation to weldable layer. 2. The foil according to claim 2. The composition of claim 1, characterized in that it contains an additive containing 0.4-0.7% by weight of component (1), 0.1 (0.5% by weight of component (2) and 20% by weight of component (2) and 20% —09 and 6% by weight of ingredient (3). 3. Foil according to claims A compound according to claim 1, characterized in that component (1) comprises N, N-di (hydroxyalkyl) -alkylamine having 12-16 carbon atoms in the alkylamino group. 4. The foil according to claims A compound according to claim 1, characterized in that as component (1) it comprises N, N-two /! 2-Hydroxyethyl) alkylamine with 12- to 16 carbon atoms in the alkylarriine group. 5. Foil according to claims A method as claimed in claim 1, characterized in that the component (2) comprises a copolymer of ethylene with methacrylic acid, acrylonitrile with butadiene and methacrylate, or ethylene with vinyl alcohol, or polyylaurynolalktai. 6. The foil according to claims 2. The composition of claim 1, wherein component (3) comprises a polydualxiioxane with a viscosity of at least 1 million mm 2 / s at a temperature of 20 ° C. 7. The foil according to claims 6. A composition according to claim 1, characterized in that the component (3) comprises polyM dimethylsiloxane. 3. The foil according to claim The method of claim 1, characterized in that it comprises a core film that is bi-axially stretched and a weldable film that is stretched at least uniaxially. 25 30 National Printing House, Plant No. 6, 458/84 Price 100 PLN! PL PL PL PL

Claims (3)

1. Zastrzezenia patentowe y 1. Wielowarstwowa folia dajaca sie spawac, skla¬ dajaca sie z co najmniej jednej folii polipropy¬ lenowej i co najmniej jednej, dajacej sie spa¬ wac folii z polietylenu albo z kopolimeru etylenu zawierajacego co najmniej 4% wagowe etylenu, znamienna tym, ze warstwa folii dajaca sie spa- 5 wac zawiera dodatek skladajacy sie z (1) dlugo- lancuchowej aminy alifatycznej w ilosci 0,3—lD/o wagowych w stosunku do warstwy dajacej sie spa¬ wac, (2) zdyspergowanego polimeru termoplastycz¬ nego nie mieszajacego sie z polietylenem lub z io kopolimerem etylenu, majacego temperature miek- nienia najwyzej o 50°C nizsza lub wyzsza od tem¬ peratury miekriienia polietylenu lub kopolimeru etylenu, w ilosci 0,1—0,71% wagowych w stosunku do warstwy dajacej sie spawac i (3) polidwual- 15 ikilosiloksanu w ilosci O,2h^0,8°/o wagowych w sto¬ sunku do warstwy dajacej sie spawac.1. Claims 1. A multilayer weldable film consisting of at least one polypropylene film and at least one weldable film of polyethylene or an ethylene copolymer containing at least 4% by weight of ethylene; characterized in that the weldable film layer contains an additive of (1) a long-chain aliphatic amine in an amount of 0.3-1% by weight relative to the weldable layer, (2) the dispersed polymer thermoplastic immiscible with polyethylene or with ethylene copolymer, having a flushing temperature of at most 50 ° C lower or higher than the flushing temperature of polyethylene or ethylene copolymer, in the amount of 0.1-0.71% by weight in the ratio to the weldable layer and (3) a polydual and siloxane in an amount of 0.2 h. 0.8% by weight in relation to the weldable layer. 2. Folia wedlug zastrz. 1, znamienna tym, ze za¬ wiera dodatek zawierajacy 0,4—0,7°/o wagowych skladnika (1), 0,l(&-^0,5i°/o wagowych skladnika (2) i 20 o,3—09i6% wagowych skladnika (3). 3. Folia wedlug zastrz. 1, znamienna tym, ze jako skladnik (1) zawiera N,N-dwui/hydroksyalklilo/-alki- loamine o 12^16 atomach wegla w grupie alkilo- aminowej. 4. Folia wedlug zastrz. 1, znamienna tym, ze jako skladnik (1) zawiera N,N-dwaii/!2-hydrokfeyetyio/-al- kiloamine o 12-^16 atomach wegla w grupie alki- loarriinowej. 5. Folia wedlug zastrz. 1, znamienna tym, ze jako skladnik (2) zawiera kopolimer etylenu z kwasem metakrylowym, akrylonitrylu z butadienem i meta- krylanem lub etylenu z alkoholem winylowym, albo poliilaurynollalktaim. 6. Folia wedlug zastrz. 1, znamienna tym, ze jako 35 skladnik (3) zawiera polidwualkUosiioksan o lepkos¬ ci wynoszacej co najmniej 1 milion mm2/s w tem¬ peraturze 20°C. 7. Folia wedlug zastrz. 1, znamienna tym, ze jako skladnik (3) zawiera polMwuimetylosiloksan. 402. The foil according to claim 3. A composition according to claim 1, characterized in that it contains an additive containing 0.4-0.7% by weight of component (1), 0.1 (0.5% by weight of component (2) and 20% by weight of component (2) and 20% - 09.6% by weight of component (3). 3. Film according to claim 1, characterized in that component (1) comprises N, N-di (hydroxyalkyl) -alkylamine with 12-16 carbon atoms in the alkylamino group 4. The film according to claim 1, characterized in that as component (1) it comprises N, N-two [omega] 2 -hydrocfeyetio [alpha] alkyl amine with 12- to 16 carbon atoms in the alkylarriine group. according to claim 1, characterized in that the component (2) comprises a copolymer of ethylene with methacrylic acid, acrylonitrile with butadiene and methacrylate, or ethylene with vinyl alcohol, or polyilaurynolalktaim. Component (3) comprises a polydualxiioxane with a viscosity of at least 1 million mm 2 / s at a temperature of 20 ° C. 7. The film according to claim 1, characterized in that component (3) comprises polyM dimethylsiloxane. 3. Folia wedlug zastrz. 1, znamienna tym, ze za¬ wiera folie rdzeniowa orientowana przez rozciaga- ^ nie dwuosiowo a warstwe dajaca sie spawac orien¬ towana przez rozciaganie co najmniej jednoosiowo. 25 30 Drukarnia Narodowa, Zaklad Nr 6, 458/84 Cena 100 z! PL PL PL PL3. The foil according to claims The method of claim 1, characterized in that it comprises a core film that is bi-axially stretched and a weldable film that is stretched at least uniaxially. 25 30 National Printing House, Plant No. 6, 458/84 Price 100 PLN! PL PL PL PL
PL1980227335A 1979-10-17 1980-10-16 Multilayer weldable film PL124695B1 (en)

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AT (1) ATE1273T1 (en)
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SU1082325A3 (en) 1984-03-23
DE2941909A1 (en) 1981-04-30
BR8006632A (en) 1981-05-12
ES495981A0 (en) 1981-07-16
MX155404A (en) 1988-02-29
ES8106105A1 (en) 1981-07-16
DK161500B (en) 1991-07-15
JPS6356864B2 (en) 1988-11-09
NO154788C (en) 1986-12-29
AU536579B2 (en) 1984-05-10
US4348457A (en) 1982-09-07
EP0027586B1 (en) 1982-06-30
DK161500C (en) 1991-12-23
AU6323380A (en) 1981-04-30
PL227335A1 (en) 1981-07-10
DD160340A5 (en) 1983-06-01
NO154788B (en) 1986-09-15
DK438380A (en) 1981-04-18
FI803251L (en) 1981-04-18
CA1152420A (en) 1983-08-23
EP0027586A1 (en) 1981-04-29
CS216943B2 (en) 1982-12-31
NO802938L (en) 1981-04-21
FI68848B (en) 1985-07-31
ATE1273T1 (en) 1982-07-15
DE3060632D1 (en) 1982-08-19
FI68848C (en) 1985-11-11
JPS5662152A (en) 1981-05-27
ZA806360B (en) 1981-10-28

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